JP4329379B2 - Connection structure between the bottom of the center pillar and the side sill - Google Patents

Connection structure between the bottom of the center pillar and the side sill Download PDF

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Publication number
JP4329379B2
JP4329379B2 JP2003100474A JP2003100474A JP4329379B2 JP 4329379 B2 JP4329379 B2 JP 4329379B2 JP 2003100474 A JP2003100474 A JP 2003100474A JP 2003100474 A JP2003100474 A JP 2003100474A JP 4329379 B2 JP4329379 B2 JP 4329379B2
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Japan
Prior art keywords
wall
side sill
center pillar
reinforcement member
extending
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JP2003100474A
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Japanese (ja)
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JP2004306698A (en
Inventor
雅哉 印南
達三 富田
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Description

【０００１】
【発明の属する技術分野】
この発明は、乗用車等の自動車の車体のセンタピラー下部とサイドシルとの結合構造に関する。
【０００２】
【従来の技術】
自動車の車体の骨格をなすセンタピラーの下部とサイドシルとの結合部は大きな剛性が要求される。例えばサイドシルの剛性を高めるために、サイドシルインナ部材とサイドアウタパネルとの間にサイドシルリンフォース部材を設けることが行なわれている。また、センタピラーの剛性を高めるために、センタピラーインナ部材とサイドアウタパネルとの間にセンタピラーリンフォース部材を設けることも行なわれている。
【０００３】
センタピラー下部とサイドシルとの結合部の一例は、図６の従来例に示すように、センタピラーリンフォース部材１の下端部に形成した延出壁２をサイドシルリンフォース部材３の側面にスポット溶接によって結合するとともに、センタピラーリンフォース部材１のフランジ部４をサイドシルリンフォース部材３のフランジ部５にスポット溶接によって結合している。図６中の符号Ｐ１，Ｐ２は、それぞれ溶接部を示している。また、車体の側面方向から加わる荷重に対する剛性を高めるために、サイドシルにバルクヘッド（隔壁）を設けることもある。
【０００４】
またセンタピラー下部のヒンジ取付部の剛性を高めるために、ヒンジリンフォース部材が使用されることもある。（例えば下記特許文献１参照）
【０００５】
【特許文献１】
特許第３１４２０２０号公報
【０００６】
【発明が解決しようとする課題】
図６に示す従来例では、センタピラーリンフォース部材１の下端１ａとサイドシルリンフォース部材３の上面３ａとの間に隙間Ｇが生じる。この隙間Ｇから車外の風切り音がセンタピラーの内部に入り込むことにより異音発生の原因になったり、砂塵等の異物がセンタピラーの内部に侵入する可能性がある。
【０００７】
このためセンタピラーの内部にクッション材などの詰め物を収容する必要があり、部品数とコストが増える原因となる。また、溶接部Ｐ１，Ｐ２間の距離Ｌ１が大きくなるため、センタピラー下部とサイドシルとの結合強度に関して改善の余地があった。
【０００８】
前記特許文献１に記載されているセンタピラー下部の結合構造では、センタピラーの内部に収容されるヒンジリンフォースが、下方に向かってほぼストレートな形状であるため、車体側面方向から加わる荷重に対して、剛性をさほど大きくすることができない。車体側面方向から加わる荷重に対して剛性を高めるには、センタピラー下部あるいはサイドシルの内部にバルクヘッドを設ける必要があるため、部品数と工数が増える原因になる。
【０００９】
従ってこの発明の目的は、センタピラー下部とサイドシルとの結合部の強度を高めかつセンタピラー下部の剛性を高めることができる結合構造を提供することにある。
【００１０】
【課題を解決するための手段】
本発明は、センタピラー下部とサイドシルとの結合構造であって、センタピラーリンフォース部材の下部が、下方に向かって前後方向の寸法が増加する形状の幅広がり部を含む側壁と、前記幅広がり部の前側の縁部から車体内側に延びるよう形成された斜壁と、前記斜壁から下方に延びる縦壁と、前記縦壁の下端から前記サイドシルリンフォース部材に沿う方向に延びかつ前記サイドシルリンフォース部材の上面に結合される前側の横壁と、前記縦壁と前記横壁とをつなぐ連結壁と、前記幅広がり部の下方に延出し前記サイドシルリンフォース部材の側面にスポット溶接等によって結合される下端延出壁と、前記幅広がり部の後側の縁部から車体内側に延びるよう形成された後壁と、前記後壁の下端から前記サイドシルリンフォース部材に沿って水平方向に延びる後側の横壁と、前記後壁と前記後側の横壁とをつなぐ連結壁とを具備し、前記前側の連結壁と前記前側の横壁と前記縦壁と前記斜壁とによって前側の立体形状部が形成され、前記後側の連結壁と前記後側の横壁と前記後壁とによって後側の立体形状部が形成され、前記サイドシルリンフォース部材の内面側には、前記前側の立体形状部の横壁と前記後側の立体形状部の横壁とにわたってこれら横壁の下方で車体の前後方向に延びるサイドシルサポート部材が設けられ、該サイドシルサポート部材は前記センタピラーインナ部材の下端部と前記下端延出壁との間に配置され、該サイドシルサポート部材の上端と下端をそれぞれ前記サイドシルリンフォース部材の内面に溶接し、かつ、前記前側の横壁と前記後側の横壁とをそれぞれ前記サイドシルリンフォース部材の上面に溶接している。
【００１１】
【発明の実施の形態】
以下に本発明の一実施形態について、図１から図５を参照して説明する。
図５に示す自動車の車体１０は、センタピラー１１とサイドシル１２とルーフ部１３などを備えている。センタピラー１１の下部１１ａは下記連結構造によってサイドシル１２に結合されている。センタピラー１１の上部１１ｂはルーフ部１３に結合されている。センタピラー１１の近傍に乗員が着座するシート１４が設けられている。
【００１２】
図２に示すようにセンタピラー１１は、センタピラーインナ部材２０と、センタピラーリンフォース部材２１と、サイドアウタパネル２２のピラー部２２ａなどを含んでいる。センタピラーリンフォース部材２１は、センタピラーインナ部材２０とサイドアウタパネル２２との間に設けられている。センタピラーリンフォース部材２１とサイドアウタパネル２２のそれぞれの下部に、ドアヒンジ取付部２３，２４が設けられている。
【００１３】
図３と図４に示すように、サイドシル１２は、サイドシルインナ部材３０と、サイドシルリンフォース部材３１と、サイドシルサポート部材３２と、サイドアウタパネル２２のサイドシル部２２ｂなどを含んでいる。サイドアウタパネル２２のサイドシル部２２ｂは、サイドシルリンフォース部材３１を車体外側から覆っている。サイドシルリンフォース部材３１とサイドシルサポート部材３２などに、電着塗装に使われる塗料がサイドシル１２の内部に流入できるように貫通孔３３，３４（図３に示す）が形成されている。
【００１４】
図４に示されるように、サイドシルインナ部材３０とサイドシルリンフォース部材３１との間にセンタピラーインナ部材２０の下端部２０ａが挟まれ、これらが互いにスポット溶接されている。図４中の符号Ｗ１，Ｗ２は、その溶接部の一例を示している。サイドシルサポート部材３２は、サイドシルリンフォース部材３１の内面側にスポット溶接されている。図４中の符号Ｗ３，Ｗ４は、その溶接部の一例を示している。
【００１５】
図１に示すようにセンタピラーリンフォース部材２１の下部２１ａは、下方に向かって前後方向の寸法が次第に大きくなる形状の幅広がり部４０を有する側壁４１と、この幅広がり部４０の前側の縁部４０ａから車体内側に延びるようプレスによって成形された斜壁４２と、幅広がり部４０の後側の縁部４０ｂから車体内側に延びるようプレスによって成形された後壁４３を有している。
【００１６】
前記斜壁４２の下端４２ａから下方に向かって縦壁４４が延びている。この縦壁４４の下端からサイドシルリンフォース部材３１に沿って水平方向に延びる前側の横壁４５が形成されている。また、後壁４３の下端からサイドシルリンフォース部材３１に沿って水平方向に延びる後側の横壁４６が形成されている。これら横壁４５，４６は、それぞれサイドシルリンフォース部材３１の上面にスポット溶接等によって結合されている。図１中の符号Ｗ５，Ｗ６は、その溶接部の一例を示している。
【００１７】
縦壁４４と前側の横壁４５が連結壁５０によってつながれている。すなわち、図１に示すＸ，Ｙ軸を含む面に沿う上下方向の連結壁５０と、Ｘ，Ｚ軸を含む面に沿う水平方向の横壁４５と、Ｙ，Ｚ軸を含む面に沿う上下方向の縦壁４４と、斜壁４２などによって、バルクヘッドに相当する三次元形状の剛性の高い立体形状部５１が形成されている。この立体形状部５１によって、車体１０の側面方向から加わる荷重に対して高い剛性を発揮することができる。
【００１８】
また、後壁４３と後側の横壁４６が連結壁５５によってつながれている。すなわちこの部位においては、図１に示すＸ，Ｙ軸を含む面に沿う上下方向の連結壁５５と、Ｘ，Ｚ軸を含む面に沿う水平方向の横壁４６と、Ｙ，Ｚ軸を含む面に沿う上下方向の後壁４３とによって、立体形状部５６が形成される。この立体形状部５６も、車体１０の側面方向から加わる荷重に対して高い剛性を発揮することができる。
【００１９】
幅広がり部４０および横壁４５，４６の下方に下端延出壁６０が延びている。下端延出壁６０は、サイドシルリンフォース部材３１の側面にスポット溶接によって結合される。図１中の符号Ｗ７は、その溶接部の一例を示している。
【００２０】
この実施形態の結合構造は、センタピラーリンフォース部材２１とサイドシルリンフォース部材３１とを結合する溶接部Ｗ５，Ｗ７間の距離Ｌ２を、図６に示す従来例の溶接部間の距離Ｌ１よりも小さくすることができるので、センタピラーリンフォース部材２１とサイドシルリンフォース部材３１との結合強度が高まる。
【００２１】
また、センタピラーリンフォース部材２１の下部２１ａに形成した縦壁４４に連なる横壁４５が、サイドシルリンフォース部材３１の上面に溶接されるため、図６に示す従来例に生じていた前記隙間Ｇを生じないようにすることができる。このため、センタピラー１１の内部に風切り音が侵入したり、塵や水分等が侵入することも抑制できる。
【００２２】
【発明の効果】
本発明によれば、センタピラー下部に形成された縦壁と連結壁と横壁等によって剛性の高い立体形状部が構成されるため、車体側方から加わる荷重に対してセンタピラー下部とサイドシルとの結合部の剛性を高めることができる。また、この結合部において前記横壁と下端延出壁をそれぞれサイドシルリンフォース部材の上面と側面に溶接することにより、溶接部間の距離を小さくすることができ、結合強度を高めることができる。
【００２３】
また、前記横壁がサイドシル上面に結合されることにより、サイドシルリンフォース部材の上面とセンタピラーリンフォース部材の下端との間に隙間が生じないため、センタピラーの内部に風切り音が侵入したり異物が侵入することを抑制できる。
【図面の簡単な説明】
【図１】 本発明の一実施形態のセンタピラー下部とサイドシルとの結合構造におけるセンタピラーリンフォース部材の下部の斜視図。
【図２】 本発明の一実施形態のセンタピラー下部とサイドシルとの結合構造におけるセンタピラーの分解斜視図。
【図３】 本発明の一実施形態のセンタピラー下部とサイドシルとの結合構造におけるサイドシルを分解して示す斜視図。
【図４】 図５中のＦ４−Ｆ４線に沿うセンタピラー下部とサイドシルとの結合部の断面図。
【図５】 自動車のセンタピラーを示す車体の一部の側面図。
【図６】 従来のセンタピラー下部とサイドシルとの結合部を示す斜視図。
【符号の説明】
１０…車体
１１…センタピラー
１２…サイドシル
２０…センタピラーインナ部材
２１…センタピラーリンフォース部材
２２…サイドアウトパネル
３０…サイドシルインナ部材
３１…サイドシルリンフォース部材
４１…側壁
４２…斜壁
４４…縦壁
４５…横壁
５０…連結壁
６０…下端延出壁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for connecting a lower part of a center pillar of a vehicle body such as a passenger car and a side sill.
[0002]
[Prior art]
The joint between the lower part of the center pillar that forms the skeleton of the automobile body and the side sill is required to have high rigidity. For example, in order to increase the rigidity of the side sill, a side sill reinforcement member is provided between the side sill inner member and the side outer panel. In order to increase the rigidity of the center pillar, a center pillar reinforcement member is also provided between the center pillar inner member and the side outer panel.
[0003]
An example of the connecting portion between the center pillar lower portion and the side sill is spot-welded to the side surface of the side sill reinforcement member 3 with the extension wall 2 formed at the lower end of the center pillar reinforcement member 1 as shown in the conventional example of FIG. And the flange portion 4 of the center pillar reinforcement member 1 is joined to the flange portion 5 of the side sill reinforcement member 3 by spot welding. Symbols P1 and P2 in FIG. 6 indicate welds, respectively. Further, a bulkhead (partition wall) may be provided on the side sill in order to increase rigidity against a load applied from the side surface direction of the vehicle body.
[0004]
In addition, a hinge reinforcement member may be used to increase the rigidity of the hinge mounting portion below the center pillar. (For example, see Patent Document 1 below)
[0005]
[Patent Document 1]
Japanese Patent No. 3142020 [0006]
[Problems to be solved by the invention]
In the conventional example shown in FIG. 6, a gap G is generated between the lower end 1 a of the center pillar reinforcement member 1 and the upper surface 3 a of the side sill reinforcement member 3. There is a possibility that wind noise outside the vehicle enters the center pillar through the gap G, which may cause abnormal noise, or foreign matter such as dust may enter the center pillar.
[0007]
For this reason, it is necessary to store a padding such as a cushion material in the center pillar, which causes an increase in the number of parts and the cost. In addition, since the distance L1 between the welds P1 and P2 is increased, there is room for improvement in connection strength between the lower part of the center pillar and the side sill.
[0008]
In the coupling structure of the lower part of the center pillar described in Patent Document 1, the hinge reinforcement housed inside the center pillar has a substantially straight shape toward the lower side. Therefore, the rigidity cannot be increased so much. In order to increase the rigidity against the load applied from the side of the vehicle body, it is necessary to provide a bulkhead below the center pillar or inside the side sill, which causes an increase in the number of parts and man-hours.
[0009]
Accordingly, an object of the present invention is to provide a coupling structure that can increase the strength of the coupling portion between the center pillar lower portion and the side sill and increase the rigidity of the center pillar lower portion.
[0010]
[Means for Solving the Problems]
The present invention is a coupling structure of a center pillar lower portion and a side sill, wherein the lower portion of the center pillar reinforcement member includes a side wall including a width expanding portion whose shape increases in the front-rear direction toward the lower side, and the width expanding A slant wall formed so as to extend inward of the vehicle body from a front edge of the part, a vertical wall extending downward from the slant wall, and extending from a lower end of the vertical wall in a direction along the side sill reinforcement member and the side sill phosphorus A front lateral wall coupled to the upper surface of the force member, a connecting wall connecting the longitudinal wall and the lateral wall, and extending below the widened portion and coupled to a side surface of the side sill reinforcement member by spot welding or the like. and bottom extension wall, a rear wall formed so as to extend inside the vehicle body from the side of the rear edge of the wide rising portion, in the side sill reinforcement member from the lower end of the rear wall along A rear side wall extending horizontally and a connecting wall connecting the rear wall and the rear side wall, the front side connecting wall, the front side wall, the vertical wall, and the slant wall. A front three-dimensional shape portion is formed, a rear three-dimensional shape portion is formed by the rear connecting wall, the rear side wall, and the rear wall, and the front side is formed on the inner surface side of the side sill reinforcement member. A side sill support member extending in the front-rear direction of the vehicle body is provided below the horizontal wall across the horizontal wall of the three-dimensional shape portion and the horizontal wall of the rear three-dimensional shape portion, and the side sill support member includes a lower end portion of the center pillar inner member. Arranged between the lower end extending wall, the upper end and the lower end of the side sill support member are welded to the inner surface of the side sill reinforcement member, respectively, and the front side wall and the rear side wall are Respectively wherein is welded to the upper surface of the side sill reinforcement member.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
A vehicle body 10 shown in FIG. 5 includes a center pillar 11, a side sill 12, a roof portion 13, and the like. The lower part 11a of the center pillar 11 is coupled to the side sill 12 by the following connecting structure. An upper portion 11 b of the center pillar 11 is coupled to the roof portion 13. A seat 14 on which an occupant sits is provided in the vicinity of the center pillar 11.
[0012]
As shown in FIG. 2, the center pillar 11 includes a center pillar inner member 20, a center pillar reinforcement member 21, a pillar portion 22 a of the side outer panel 22, and the like. The center pillar reinforcement member 21 is provided between the center pillar inner member 20 and the side outer panel 22. Door hinge mounting portions 23 and 24 are provided at the lower portions of the center pillar reinforcement member 21 and the side outer panel 22, respectively.
[0013]
As shown in FIGS. 3 and 4, the side sill 12 includes a side sill inner member 30, a side sill reinforcement member 31, a side sill support member 32, a side sill portion 22 b of the side outer panel 22, and the like. The side sill portion 22b of the side outer panel 22 covers the side sill reinforcement member 31 from the outside of the vehicle body. Through holes 33 and 34 (shown in FIG. 3) are formed in the side sill reinforcement member 31 and the side sill support member 32 so that the paint used for electrodeposition coating can flow into the side sill 12.
[0014]
As shown in FIG. 4, the lower end portion 20a of the center pillar inner member 20 is sandwiched between the side sill inner member 30 and the side sill reinforcement member 31, and these are spot welded together. Symbols W1 and W2 in FIG. 4 show an example of the welded portion. The side sill support member 32 is spot welded to the inner surface side of the side sill reinforcement member 31. Symbols W3 and W4 in FIG. 4 show an example of the welded portion.
[0015]
As shown in FIG. 1, the lower portion 21 a of the center pillar reinforcement member 21 includes a side wall 41 having a widened portion 40 having a shape in which a dimension in the front-rear direction gradually increases downward, and a front edge of the widened portion 40. The slant wall 42 is formed by pressing so as to extend from the portion 40a to the inside of the vehicle body, and the rear wall 43 is formed by pressing so as to extend from the rear edge portion 40b of the widened portion 40 to the inside of the vehicle body.
[0016]
A vertical wall 44 extends downward from the lower end 42a of the inclined wall 42. A front horizontal wall 45 extending in the horizontal direction from the lower end of the vertical wall 44 along the side sill reinforcement member 31 is formed. A rear side wall 46 extending in the horizontal direction from the lower end of the rear wall 43 along the side sill reinforcement member 31 is formed. These horizontal walls 45 and 46 are respectively coupled to the upper surface of the side sill reinforcement member 31 by spot welding or the like. Symbols W5 and W6 in FIG. 1 show an example of the welded portion.
[0017]
The vertical wall 44 and the front horizontal wall 45 are connected by a connecting wall 50. That is, the vertical connection wall 50 along the plane including the X and Y axes shown in FIG. 1, the horizontal wall 45 along the plane including the X and Z axes, and the vertical direction along the plane including the Y and Z axes. A three-dimensional shape portion 51 having a three-dimensional shape corresponding to a bulk head and having high rigidity is formed by the vertical wall 44 and the inclined wall 42. The three-dimensionally shaped portion 51 can exhibit high rigidity against a load applied from the side surface direction of the vehicle body 10.
[0018]
Further, the rear wall 43 and the rear side wall 46 are connected by a connecting wall 55. That is, in this part, the vertical connecting wall 55 along the plane including the X and Y axes shown in FIG. 1, the horizontal wall 46 along the plane including the X and Z axes, and the plane including the Y and Z axes. The three-dimensionally shaped portion 56 is formed by the rear wall 43 in the vertical direction along. This three-dimensionally shaped portion 56 can also exhibit high rigidity against a load applied from the side surface direction of the vehicle body 10.
[0019]
A lower end extending wall 60 extends below the widened portion 40 and the lateral walls 45 and 46. The lower end extending wall 60 is joined to the side surface of the side sill reinforcement member 31 by spot welding. A symbol W7 in FIG. 1 indicates an example of the welded portion.
[0020]
The coupling structure of this embodiment is such that the distance L2 between the welded portions W5 and W7 that couple the center pillar reinforcement member 21 and the side sill reinforcement member 31 is greater than the distance L1 between the welded portions of the conventional example shown in FIG. Since it can be made small, the coupling strength between the center pillar reinforcement member 21 and the side sill reinforcement member 31 is increased.
[0021]
Further, since the horizontal wall 45 connected to the vertical wall 44 formed in the lower portion 21a of the center pillar reinforcement member 21 is welded to the upper surface of the side sill reinforcement member 31, the gap G generated in the conventional example shown in FIG. It can be prevented from occurring. For this reason, wind noise or intrusion of dust or moisture into the center pillar 11 can be suppressed.
[0022]
【The invention's effect】
According to the present invention, since the three-dimensional shape portion having high rigidity is configured by the vertical wall, the connecting wall, the horizontal wall, and the like formed in the lower part of the center pillar, the lower part of the center pillar and the side sill against the load applied from the side of the vehicle body. The rigidity of the coupling portion can be increased. Further, by welding the lateral wall and the lower end extending wall to the upper surface and the side surface of the side sill reinforcement member at the joint portion, the distance between the weld portions can be reduced, and the joint strength can be increased.
[0023]
In addition, since the lateral wall is coupled to the upper surface of the side sill, there is no gap between the upper surface of the side sill reinforcement member and the lower end of the center pillar reinforcement member. Can be prevented from entering.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lower portion of a center pillar reinforcement member in a joint structure of a lower portion of a center pillar and a side sill according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a center pillar in a joint structure of a center pillar lower part and a side sill according to an embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a side sill in a joint structure of a center pillar lower part and a side sill according to an embodiment of the present invention.
4 is a cross-sectional view of a joint portion between a center pillar lower portion and a side sill along line F4-F4 in FIG.
FIG. 5 is a side view of a part of a vehicle body showing a center pillar of an automobile.
FIG. 6 is a perspective view showing a connecting portion between a conventional center pillar lower part and a side sill.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Vehicle body 11 ... Center pillar 12 ... Side sill 20 ... Center pillar inner member 21 ... Center pillar reinforcement member 22 ... Side out panel 30 ... Side sill inner member 31 ... Side sill reinforcement member 41 ... Side wall 42 ... Slanting wall 44 ... Vertical wall 45 ... Horizontal wall 50 ... Connecting wall 60 ... Lower end extension wall

Claims (1)

自動車の車体のセンタピラー下部とサイドシルとの結合構造であって、
前記センタピラーがセンタピラーインナ部材とセンタピラーリンフォース部材とサイドアウタパネルとを有し、
前記サイドシルがサイドシルインナ部材とサイドシルリンフォース部材とサイドアウタパネルとを有し、
前記センタピラーリンフォース部材の下部が、
下方に向かって前後方向の寸法が増加する形状の幅広がり部を含む側壁と、
前記幅広がり部の前側の縁部から車体内側に延びるよう形成された斜壁と、
前記斜壁から下方に延びる縦壁と、
前記縦壁の下端から前記サイドシルリンフォース部材に沿う方向に延びかつ前記サイドシルリンフォース部材の上面に結合される前側の横壁と、
前記縦壁と前記横壁とをつなぐ連結壁と、
前記幅広がり部の下方に延出し前記サイドシルリンフォース部材の側面に結合される下端延出壁と、
前記幅広がり部の後側の縁部から車体内側に延びるよう形成された後壁と、
前記後壁の下端から前記サイドシルリンフォース部材に沿って水平方向に延びる後側の横壁と、
前記後壁と前記後側の横壁とをつなぐ連結壁とを具備し、
前記前側の連結壁と前記前側の横壁と前記縦壁と前記斜壁とによって前側の立体形状部が形成され、
前記後側の連結壁と前記後側の横壁と前記後壁とによって後側の立体形状部が形成され、
前記サイドシルリンフォース部材の内面側には、前記前側の立体形状部の横壁と前記後側の立体形状部の横壁とにわたってこれら横壁の下方で車体の前後方向に延びるサイドシルサポート部材が設けられ、該サイドシルサポート部材は前記センタピラーインナ部材の下端部と前記下端延出壁との間に配置され、該サイドシルサポート部材の上端と下端をそれぞれ前記サイドシルリンフォース部材の内面に溶接し、かつ、前記前側の横壁と前記後側の横壁とをそれぞれ前記サイドシルリンフォース部材の上面に溶接したことを特徴とするセンタピラー下部とサイドシルとの結合構造。It is a coupling structure between the lower part of the center pillar of the car body and the side sill,
The center pillar has a center pillar inner member, a center pillar reinforcement member, and a side outer panel;
The side sill has a side sill inner member, a side sill reinforcement member, and a side outer panel,
The lower part of the center pillar reinforcement member is
A sidewall including a widened portion having a shape in which the dimension in the front-rear direction increases downward,
A sloping wall formed to extend from the front edge of the widened portion to the vehicle body inside;
A vertical wall extending downward from the oblique wall;
A front side wall extending from a lower end of the vertical wall in a direction along the side sill reinforcement member and coupled to an upper surface of the side sill reinforcement member;
A connecting wall connecting the vertical wall and the horizontal wall;
A lower end extending wall that extends below the widened portion and is coupled to a side surface of the side sill reinforcement member;
A rear wall formed to extend from the rear edge of the widened portion to the vehicle body inside;
A lateral wall on the rear side extending horizontally from the lower end of the rear wall along the side sill reinforcement member;
A connecting wall connecting the rear wall and the lateral wall on the rear side;
A front three-dimensional shape portion is formed by the front connection wall, the front side wall, the vertical wall, and the oblique wall,
A rear three-dimensional shape portion is formed by the rear connecting wall, the rear lateral wall, and the rear wall,
On the inner surface side of the side sill reinforcement member, a side sill support member extending in the front-rear direction of the vehicle body is provided below the horizontal wall across the horizontal wall of the front three-dimensional shape portion and the horizontal wall of the rear three-dimensional shape portion, The side sill support member is disposed between the lower end portion of the center pillar inner member and the lower end extending wall, the upper end and the lower end of the side sill support member are welded to the inner surface of the side sill reinforcement member, and the front side The center pillar lower portion and the side sill are combined with each other, wherein the side wall and the rear side wall are welded to the upper surface of the side sill reinforcement member, respectively .
JP2003100474A 2003-04-03 2003-04-03 Connection structure between the bottom of the center pillar and the side sill Expired - Lifetime JP4329379B2 (en)

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JP5029080B2 (en) * 2007-03-15 2012-09-19 トヨタ自動車株式会社 Body rocker structure
AU2013384023A1 (en) * 2013-03-26 2015-10-22 Toyota Jidosha Kabushiki Kaisha Automobile front pillar bottom structure
JP6299456B2 (en) * 2014-06-13 2018-03-28 三菱自動車エンジニアリング株式会社 Body side structure
JP7375421B2 (en) * 2019-09-27 2023-11-08 マツダ株式会社 Vehicle body structure and vehicle manufacturing method
JP7440763B2 (en) * 2020-04-28 2024-02-29 日本製鉄株式会社 side sill structure
JP7456310B2 (en) 2020-07-01 2024-03-27 三菱自動車工業株式会社 Vehicle side structure

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